upgraded php-fpm version

Author: damalis

env.example

@@ -7,8 +7,9 @@ DIRECTORY_PATH=directory_path
 
 LETSENCRYPT_EMAIL=email@domain.com
 LETSENCRYPT_CONF_PREFIX=/etc/letsencrypt
+SSL_SNIPPET=ssl_snippet
 
-PHP_IMAGE_NAME=php:7.4-fpm
+PHP_IMAGE_NAME=php:8.3-fpm
 PHP_INI_DIR_PREFIX=/usr/local/etc
 
 DB_USER=db_username
@@ -22,7 +23,6 @@ DATABASE_IMAGE_NAME=which_db
 DATABASE_CONT_NAME=which_db
 DATABASE_VERSION=latest
 DATABASE_PACKAGE_MANAGER=db_package_manager
-DATABASE_AUTHENTICATION_PLUGIN=db_authentication_plugin
 DATABASE_ADMIN_COMMANDLINE=db_admin_commandline
 
 PMA_CONTROLUSER=pma_username